青云翻译

(4) acoustic wallpaper: Use sound-absorbing material to prevent echo, for the country theater, concert hall, conference center;

(4) sound absorbing wallpaper: using sound-absorbing material, prevents echo, apply to theatre, concert hall, Conference Center;

正在翻译，请等待...

( 4) sound-absorbing wall paper: use sound-absorbing materials that can prevent the echoes, applicable to theater, concert hall, conference center;

(4) sound absorbing wallpaper: using sound-absorbing material, prevents echo, apply to theatre, concert hall, Conference Center;